doc: fix doc/develop/logging.rst
Sphinx 3 builds fail due to doc/develop/logging.rst producing duplicate
labels.
Include logging.h only once in the API section and use cross-references for
the enums log_level_t and log_category_t.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
diff --git a/doc/api/index.rst b/doc/api/index.rst
index cbecd10..ea02aa5 100644
--- a/doc/api/index.rst
+++ b/doc/api/index.rst
@@ -10,6 +10,7 @@
efi
getopt
linker_lists
+ logging
pinctrl
rng
sandbox
diff --git a/doc/api/logging.rst b/doc/api/logging.rst
new file mode 100644
index 0000000..1e6cbc4
--- /dev/null
+++ b/doc/api/logging.rst
@@ -0,0 +1,6 @@
+.. SPDX-License-Identifier: GPL-2.0+
+
+Logging API
+===========
+
+.. kernel-doc:: include/log.h